chore: add auto git push mirror to github

.build.yml

@@ -5,9 +5,16 @@ packages:
   - pnpm
 secrets:
   - 291f0e35-9b8d-43ff-844c-77c5f29c1876
+  - bbfcb6dc-7c4a-42ee-a11a-022f0339a133
 environment:
+  REPO: guides
+  GH_USER: ayoayco
   NETLIFY_SITE_ID: d48d0f43-25b7-4d03-bbd2-b19ed09ea063
 tasks:
+  - push-mirror: |
+      cd ~/"${REPO}"
+      git config --global credential.helper store
+      git push --mirror "https://github.com/${GH_USER}/${REPO}"
   - install-deps: |
       cd guides
       pnpm i